“…Cooperband et al (1968) (Heilman and MacFarland, 1966); hepatitis (Paronetto and Popper, 1970); ataxia telangiectasia (MacFarlin and Oppenheim, 1969); secondary syphilis (Levene et al, 1969); chronic candidiasis (Canales et al, 1969); Hodgkin's disease (Trubowitz, Masek and del Rosario, 1966); as well as cancer (Trubowitz et al, 1966;Salk, 1967;and others). With the present highly sensitive and quantitative method of assessing lymphocyte sensitization, the titre of LDF in health and disease can readily be determined.…”